Baking-free ardealite brick is produced by using ardealite as main material, sand as supplementary material, and cement, plaster or polybutadiene as adhering additive and through the steps of material compounding, crushing, mixing, high pressure forming and short time curing. Using the ardealite, as waste sludge of phosphate plant, to produce baking-free brick can eliminate environmental pollution caused by ardealite. Compared with baked clay brick, the baking-free ardealite brick is power saving, low in cost, short in production period, high in bearing strength and superior in appearance quality.